New ContributorHello All,
we are using 10M16 FPGA in our design. Observation is that we are able to program the FPGA using .sof every time but .pof gets installed on most boards 8/10 times and on few boards fails every time.
Could you recommend the Hardware requirement for .pof flashing? (We are using USB Blaster II).
With .pof, erase happens 100%. Blank check/ Program fails.
Thanks and Regards
New ContributorHello Frank,
Appreciate your quick response. Out of few possible trials I remember we did reduce the JTAG clk (Default 24MHz) to ~10Mhz. I will retry with even lower clk and with a capacitor. Will revert shortly. Thank you.
Regular ContributorAs we haven't received a response to our previous notification, this thread will be transitioned to community support. We hope all your concerns have been addressed. If you have any new questions, please feel free to open a new thread to receive support from Altera experts. Otherwise, community users will continue to assist you here. Thank you.
Regular ContributorHi Patrick03,
Any updates on the suggested steps?
Regards,
Fakhrul
Super ContributorHi,
did you try to reduce JTAG frequency of USB Blaster II in Programmer Hardware Setup? If this doesn't help, there may be a problem of TCK signal quality with your PCB design, causing crosstalk of other clock signals or ringing TCK edges. A small capacitive load (10 - 20 pF) at TCK near FPGA can help in some cases.
Regards
Frank
